Tester



FIG. 1 is a front elevational view of a tester showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a bottom, rear and right side perspective view thereof;

FIG. 8 is a top, front and left side perspective view showing the testerin a substantially closed state;

FIG. 9 is a perspective view showing the tester in an open state;

FIG. 10 is an enlarged view of portion 10 in FIG. 9;

FIG. 11 is a perspective view of FIG. 9 showing the tester in a usestate with a ring;

FIG. 12 is a perspective view showing the tester in an open state andthe left and right brackets beside the test platform in an open state;and,

FIG. 13 is a perspective view of FIG. 12 showing the tester in a usestate with a bracelet.

The present application relates to the ornamental design of a testerwhich is used to determine if a gemstone is Earth Mined (Natural) orHPHT treated or Lab Created (CVD) Diamond.

The broken lines in the drawings illustrate portions of the tester orenvironmental subject matters that form no part of the claimed design.

CLAIM The ornamental design for a tester, as shown and described.